Time reversal focusing of short pulses

Laurent Fillinger, Alexander Sutin, Armen Sarvazyan

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

8 Scopus citations

Abstract

Time Reversal Acoustics (TRA) provides a way to focus ultrasound in space and time. Standard TRA focusing system produces tone burst signal with a frequency band limited by the bandwidth of the transducer. For certain medical applications, both in therapy and imaging, a wider bandwidth is required. The goal of this study was to explore a possibility to generate shorter pulses less affected by the limited bandwidth of the transducers of the TRA focusing system. We proposed and tested a technique named "pseudo impulse response (pIR) method" which provides significant extension of the TRA focusing system bandwidth. In addition, the suggested method leads to a decrease of the spatial side lobes and also facilitates the task of creating multiple ultrasound foci.

Original languageEnglish
Title of host publication2007 IEEE Ultrasonics Symposium Proceedings, IUS
Pages220-223
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Ultrasonics Symposium, IUS - New York, NY, United States
Duration: 28 Oct 200731 Oct 2007

Publication series

NameProceedings - IEEE Ultrasonics Symposium
ISSN (Print)1051-0117

Conference

Conference2007 IEEE Ultrasonics Symposium, IUS
Country/TerritoryUnited States
CityNew York, NY
Period28/10/0731/10/07

Keywords

  • Focusing
  • Pseudo impulse response
  • Short pulse
  • Time reversal acoustic

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